Self-locking buffer type multi-working-condition fire-fighting hydraulic shearing and expanding breaking integrated mechanical device

Abstract

The application provides a self-locking buffer type multi-working-condition fire-fighting hydraulic shearing and expanding breaking and dismantling integrated mechanical device, which comprises a handheld part, a quick-release joint, a hydraulic drive assembly, a hydraulic supply assembly, a shearing and expanding working head assembly and an arc-shaped sliding groove one. An overload buffer mechanism is arranged in the arc-shaped sliding groove one, one end of the overload buffer mechanism is rotationally connected with a connecting rod one, the arc-shaped sliding groove and the connecting rod mechanism efficiently convert linear hydraulic motion into rotary opening motion, and the damping buffer mechanism in the arc-shaped sliding groove absorbs impact energy when overload occurs, so that the hydraulic system is protected and the hydraulic system is prevented from overpressure.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting hydraulic cutting and spreading equipment, and in particular to a self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading and demolition integrated mechanical device. Background Technology

[0002] Hydraulic spreaders are rescue and demolition tools used in vehicle accidents, building collapses, fire scenes, or natural disasters such as earthquakes. They use shearing, spreading, pulling, and clamping functions to break up various metal or non-metal structures and rescue victims trapped in dangerous environments.

[0003] An existing publication discloses a manual hydraulic double-tooth expansion shear, including a cylinder, a piston chamber located at the center of the left end face of the cylinder, a matching piston inside the piston chamber, a piston rod located at the center of the left end face of the piston, and an expansion shear assembly connected to the left end of the piston rod. An oil tank is located at the rear end of the cylinder, and a matching oil tank cover is fitted to the rear end port of the oil tank. An oil circuit switching groove is provided on the upper surface of the rear part of the cylinder; a matching oil circuit switching device is provided within the oil circuit switching groove; an ejection oil circuit is provided on the right side wall of the piston chamber, communicating with the oil circuit switching groove; an annular oil inlet groove is provided on the inner wall of the left end port of the piston chamber, with the piston located to the right of the oil inlet groove. This manual hydraulic double-tooth expansion shear can still ensure normal shearing and expansion operations even after the spring is removed, and can effectively reduce its size, facilitating the movement and use of the expansion shear.

[0004] However, the aforementioned hydraulic spreader uses a piston rod to directly drive the support plate. When it encounters a hard obstacle (such as a vehicle crash beam or reinforced concrete) during expansion or shearing, causing it to jam, the hydraulic pump continues to supply oil, and the system pressure will rise sharply. It relies on an external relief valve for passive pressure relief, but the relief valve has a slow response speed and low pressure relief accuracy. At the moment of sudden pressure rise, it may still cause hydraulic lines to burst, seals to be damaged, or even cylinder deformation. This not only causes equipment damage, but the high-pressure oil jet may also cause secondary injury to the operator.

[0005] Therefore, it is necessary to provide a new self-locking, buffered, multi-condition fire-fighting hydraulic shearing, spreading, and demolition integrated mechanical device to solve the above-mentioned technical problems. Summary of the Invention

[0006] To address the technical problem of lacking a buffer structure when encountering hard obstacles and getting stuck during expansion or shearing, this invention provides a self-locking buffered multi-condition fire-fighting hydraulic shearing, expansion, and demolition integrated mechanical device.

[0007] The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device provided by this invention includes: a handheld unit; A quick-release connector, one end of which is connected to the cutting and expanding head assembly, and the other end of which is connected to the hydraulic drive assembly; A hydraulic supply assembly is mounted on the handheld part and drives the opening and closing of the shearing and expanding head assembly. A cutting and expanding head assembly is provided, which is connected to the quick-release connector. The cutting and expanding head assembly includes a cover, a cutting mechanism, a first expanding plate, a second expanding plate, a connecting column, two opposing piston rods, and a reservoir. The cover is connected to one end of the quick-release connector. The connecting column is located on the outside of the cover. The first expanding plate and the second expanding plate are rotatably mounted on the surface of the connecting column and are arranged opposite to each other. The top of the first expanding plate and the second expanding plate are each provided with an arc-shaped sliding groove. The reservoir is fixedly installed inside the cover. The inner cavity of the reservoir is connected to the output end of the hydraulic supply component. One end of each of the two piston rods is slidably connected to the inner side of the reservoir. The other ends of the two piston rods pass through the first expanding plate and the second expanding plate, respectively. The inner side of one end of each of the two piston rods is provided with a connecting groove for the first expanding plate and the second expanding plate to move. A connecting rod is vertically fixed in each of the two connecting grooves. The two connecting rods pass through the two arc-shaped sliding grooves. The arc-shaped chute is also equipped with an overload buffer mechanism, one end of which is rotatably connected to the connecting rod.

[0008] Furthermore, the quick-release connector includes two hollow plates 1 and two hollow plates 2. The two hollow plates 1 are fixedly connected to one side of the cover 1 respectively. The inner cavity of each of the two hollow plates 1 is provided with a spring 1. The other end of each of the two spring 1 is fixedly connected with a movable locking block. One end of each of the two movable locking blocks passes through the two hollow plates 1 and extends into the interior of the two hollow plates 2 respectively. The two hollow plates 2 are fixedly connected to both sides of the handle. The inner cavity of each of the two hollow plates 2 is provided with an elastic telescopic head. One end of each of the two elastic telescopic heads extends out of the outside of the two hollow plates 2, and the other end of each of the two elastic telescopic heads is provided with a top post. One end of each of the two top posts abuts against the ends of the two movable locking blocks respectively.

[0009] Furthermore, it also includes a top-breaking head, which is connected to the quick-release connector; The top-breaking head includes a second cover, a second liquid storage tank, a second piston rod, and a hammer. The second liquid storage tank is fixedly installed inside the second cover. The inner cavity of the second liquid storage tank is connected to the output end of the hydraulic supply component. One end of the second piston rod is slidably connected to the inner side of the second liquid storage tank, and the other end of the second piston rod is fixedly connected to one end of the hammer.

[0010] Furthermore, the overload buffer mechanism includes a movable sleeve, an arc-shaped rod, an arc-shaped guide rail, a sliding block, and a damping telescopic rod. The movable sleeve is rotatably connected to the connecting column, and the surface of the movable sleeve is fixedly connected to one end of the arc-shaped rod. The arc-shaped guide rail is fixedly installed in an arc-shaped groove, and the sliding block is slidably installed in the arc-shaped guide rail. One side of the sliding block is fixedly connected to one end of the arc-shaped rod, and both ends of the damping telescopic rod are rotatably connected to the sliding block and the inner side of the arc-shaped guide rail, respectively.

[0011] Furthermore, the shearing mechanism includes a shearing plate one, a shearing plate two, two opposing piston rods three, and a liquid storage tank three. The shearing plate one and the shearing plate two are rotatably mounted on the surface of the connecting column, and the shearing plate one and the shearing plate two are staggered vertically. The top of the shearing plate one and the shearing plate two are provided with arc-shaped sliding grooves two. The liquid storage tank three is fixedly installed inside the cover one. The inner cavity of the liquid storage tank three is connected to the output end of the hydraulic supply component. One end of the two piston rods three is slidably connected to the inner side of the liquid storage tank three, and the other end of the two piston rods three passes through the shearing plate one and the shearing plate two respectively. The inner side of one end of the two piston rods three is provided with movable grooves for the shearing plate one and the shearing plate two to move. A connecting rod two is vertically fixed in each of the two movable grooves. The two connecting rods two pass through the two arc-shaped sliding grooves two respectively.

[0012] Furthermore, the surface of the movable card block slides in cooperation with the splined sidewalls of hollow plate one and hollow plate two.

[0013] Furthermore, the hydraulic supply assembly includes a hydraulic pump, a tank for storing hydraulic oil, and two opposing delivery pipes. The hydraulic pump is fixedly installed on one side of the handheld part, the tank is fixedly installed inside the handheld part, and the tank is connected to the hydraulic pump. One end of each delivery pipe is connected to the inner cavity of the tank, and the other end of each delivery pipe extends to the outside of the handheld part. The other end of each delivery pipe is threadedly connected to two connecting pipes. The two connecting pipes are respectively connected to the inner cavities of storage tank one and storage tank three, or to the inner cavity of storage tank two. Valves are provided on the surface of each delivery pipe.

[0014] Furthermore, the curvature of the arc-shaped rod, the arc-shaped guide rail, and the arc-shaped slide groove is the same.

[0015] Furthermore, the elastic telescopic head includes a second spring and a movable button. The movable button is slidably installed on one side of the hollow plate, and the inner side of the movable button is fixedly connected to one end of the top column. The two ends of the second spring are respectively fixedly connected to the inner side of the hollow plate and the inner side of the movable button.

[0016] Compared with related technologies, the self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device provided by the present invention has the following beneficial effects: 1. This invention reduces the amount of equipment carried by covering three fire-fighting demolition actions: shearing, expansion, and roof breaking. It connects to the shearing and expansion working head assembly and the roof breaking head through quick-release connectors. The double-sided design allows for the replacement of the working head on one hand, and avoids accidental contact to ensure reliable connection on the other.

[0017] 2. The present invention provides an overload buffer mechanism in an arc-shaped chute. One end of the overload buffer mechanism is rotatably connected to a connecting rod. The arc-shaped chute and the connecting rod mechanism efficiently convert linear hydraulic motion into rotational opening motion. The damping buffer mechanism in the arc-shaped chute absorbs impact energy during overload, protecting the hydraulic system and preventing overpressure. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of Embodiment 1 of the self-locking buffered multi-condition fire-fighting hydraulic shearing, spreading and demolition integrated mechanical device provided by the present invention; Figure 2 A cross-sectional view of the quick-release connector provided by the present invention; Figure 3 This is a schematic diagram of the structure of the active card block provided by the present invention; Figure 4 Schematic cross-sectional view of the hydraulic supply assembly provided by the present invention Figure 1 ; Figure 5 This is a partial structural schematic diagram of the cutting and expanding working head assembly provided by the present invention; Figure 6 A schematic diagram of the overload buffer mechanism provided by the present invention; Figure 7 A schematic diagram of the overall structure of Embodiment 4 of the self-locking buffered multi-condition fire-fighting hydraulic shearing, spreading and demolition integrated mechanical device provided by the present invention; Figure 8 Schematic cross-sectional view of the hydraulic supply assembly provided by the present invention Figure 2 .

[0019] Numbered in the diagram: 1. Handheld part; 2. Quick-release connector; 201. Hollow plate one; 202. Hollow plate two; 203. Spring one; 204. Movable locking block; 205. Top column; 206. Spring two; 207. Movable button; 3. Hydraulic supply assembly; 301. Hydraulic pump; 302. Tank body; 303. Conveying pipe; 304. Connecting pipe; 4. Cutting and expanding head assembly; 401. Cover one; 402. Expanding plate one; 403. Expanding plate two; 404. Connecting column; 405. Piston rod one; 406. Liquid storage tank Box 1; 407. Arc-shaped chute 1; 408. Connecting groove; 409. Connecting rod 1; 410. Movable sleeve; 411. Arc-shaped rod; 412. Arc-shaped guide rail; 413. Sliding block; 414. Damping telescopic rod; 415. Shearing plate 1; 416. Shearing plate 2; 417. Piston rod 3; 418. Liquid storage tank 3; 419. Arc-shaped chute 2; 420. Movable groove; 421. Connecting rod 2; 5. Top breaker; 501. Cover 2; 502. Liquid storage tank 2; 503. Piston rod 2; 504. Hammer. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] In the description of this invention, unless otherwise explicitly specified and limited, the terms connected, linked, and fixed should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0023] Example 1 In the specific implementation process, such as Figures 1-6As shown, the self-locking buffer type multi-condition fire-fighting hydraulic cutting, spreading and demolition integrated mechanical device includes: a hand-held part 1, and a handle is also provided on the hand-held part 1; Quick-release connector 2, one end of quick-release connector 2 is connected to the cutting and expanding head assembly 4, and the other end of quick-release connector 2 is connected to the hydraulic drive assembly; Hydraulic supply component 3 is mounted on the handheld part 1 and drives the shearing and spreading head assembly 4 to open and close. The cutting and expanding head assembly 4 is connected to the quick-release connector 2. The cutting and expanding head assembly 4 includes a cover 401, a cutting mechanism, a first expanding plate 402, a second expanding plate 403, a connecting post 404, two opposing piston rods 405, and a liquid storage tank 406. The cover 401 is connected to one end of the quick-release connector 2. The connecting post 404 is located outside the cover 401. The first expanding plate 402 and the second expanding plate 403 are rotatably mounted on the surface of the connecting post 404, and are arranged opposite to each other. The tops of both the first expanding plate 402 and the second expanding plate 403 have openings... Arc-shaped sliding groove 407, liquid storage tank 406 is fixedly installed inside cover 401, the inner cavity of liquid storage tank 406 is connected to the output end of hydraulic supply component 3, one end of two piston rods 405 is slidably connected to the inner side of liquid storage tank 406, and the other end of two piston rods 405 passes through expansion plate 402 and expansion plate 403 respectively. A connecting groove 408 is opened on the inner side of one end of two piston rods 405 for expansion plate 402 and expansion plate 403 to move. A connecting rod 409 is vertically fixed in each of the two connecting grooves 408, and the two connecting rods 409 pass through the two arc-shaped sliding grooves 407 respectively. An overload buffer mechanism is also provided inside the arc-shaped slide 407, and one end of the overload buffer mechanism is rotatably connected to the connecting rod 409.

[0024] In some embodiments, the quick-release connector 2 includes two hollow plates 1 201 and two hollow plates 202. The two hollow plates 1 201 are fixedly connected to one side of the cover 401. The inner cavity of each of the two hollow plates 1 201 is provided with a spring 203. The other end of each of the two springs 203 is fixedly connected with a movable locking block 204. One end of each of the two movable locking blocks 204 passes through the two hollow plates 1 201 and extends into the interior of the two hollow plates 202. The two hollow plates 202 are fixedly connected to both sides of the handle 1. The inner cavity of each of the two hollow plates 202 is provided with an elastic telescopic head. One end of each elastic telescopic head extends out of the outside of the two hollow plates 202, and the other end of each elastic telescopic head is provided with a top post 205. One end of each top post 205 abuts against the end of each of the two movable locking blocks 204. Specifically, the surface of the movable card block 204 slides in cooperation with the spline of the side wall of hollow plate 1 201 and hollow plate 2 202.

[0025] Specifically, the elastic telescopic head includes a second spring 206 and a movable button 207. The movable button 207 is slidably installed on one side of the hollow plate 202, and the inner side of the movable button 207 is fixedly connected to one end of the top post 205. The two ends of the second spring 206 are fixedly connected to the inner side of the hollow plate 202 and the inner side of the movable button 207, respectively.

[0026] During installation, align the hollow plate 201 on the side of the cover 401 with the hollow plate 202 on the handheld part 1, and push it in axially. The movable locking block 204 attempts to extend outward under the action of the spring 203, but is guided by the inner wall of the hollow plate 202. When the hollow plate 201 is fully inserted into the hollow plate 202, the end of the movable locking block 204 reaches the position of the top post 205. The end of the top post 205 abuts against the end of the movable locking block 204, and the locking is completed. During disassembly, the operator presses the movable button 207 on the side of the hollow plate 202. The inner side of the movable button 207 drives the top column 205 to retract into the hollow plate 202. The top column 205 pushes the end of the movable block 204 out of the hollow plate 202. The operator pulls out the working head axially. The movable block 204 retracts into the hollow plate 201 under the action of the spring 203, and the locking is released.

[0027] In some embodiments, the shearing mechanism includes a first shear plate 415, a second shear plate 416, two opposing piston rods 417, and a third liquid storage tank 418. The first shear plate 415 and the second shear plate 416 are rotatably mounted on the surface of the connecting column 404, and are staggered vertically. Both the first shear plate 415 and the second shear plate 416 have arc-shaped grooves 419 on their tops. The third liquid storage tank 418 is fixedly installed inside the cover 401. The cavity is connected to the output end of the hydraulic supply component 3. One end of the two piston rods 417 is slidably connected to the inside of the liquid storage tank 418, and the other end of the two piston rods 417 passes through the shear plate 415 and the shear plate 416 respectively. The inner side of one end of the two piston rods 417 is provided with a movable groove 420 for the shear plate 415 and the shear plate 416 to move. A connecting rod 421 is vertically fixed in each of the two movable grooves 420. The two connecting rods 421 pass through the two arc-shaped sliding grooves 419 respectively. Shearing stage: Hydraulic oil enters reservoir 3 418, pushing two piston rods 3 417 to extend outward. Connecting rod 2 421 extends with piston rod 3 417 and passes through the arc-shaped groove 2 419 on the shear plate. Due to the arc-shaped constraint of the groove and the staggered arrangement of the shear plate, the movement of connecting rod 2 421 forces the upper and lower shear plates to rotate in opposite directions. The two shear plates close relative to each other, shearing the obstacle. After the oil supply stops, connecting rod 2 421 is stuck in the current position of arc-shaped groove 2 419, and the shear plate cannot open in the opposite direction, remaining in a closed state.

[0028] Example 2 In the specific implementation process, please refer to the figure. Figure 5 as well as Figure 6 As shown, the overload buffer mechanism includes a movable sleeve 410, an arc-shaped rod 411, an arc-shaped guide rail 412, a sliding block 413, and a damping telescopic rod 414. The movable sleeve 410 is rotatably connected to the connecting column 404. The surface of the movable sleeve 410 is fixedly connected to one end of the arc-shaped rod 411. The arc-shaped guide rail 412 is fixedly installed in the arc-shaped groove 407. The sliding block 413 is slidably installed in the arc-shaped guide rail 412, and one side of the sliding block 413 is fixedly connected to one end of the arc-shaped rod 411. The two ends of the damping telescopic rod 414 are rotatably connected to the sliding block 413 and the inner side of the arc-shaped guide rail 412, respectively.

[0029] Specifically, the arc-shaped rod 411, the arc-shaped guide rail 412, and the arc-shaped slide 407 have the same curvature, and the triple curvature consistent design ensures normal rotation. It should be noted that the damping telescopic rod 414 includes a telescopic rod body, an upper hinge joint, and a lower hinge joint. The upper and lower hinge joints are respectively connected to the two ends of the telescopic rod body. The upper hinge joint is rotatably connected to one side of the sliding block 413, and the lower hinge joint is rotatably connected to the inner side of the arc-shaped guide rail 412. The telescopic rod body provides the telescopic stroke and contains a damping medium inside. The upper hinge joint is used to receive the thrust transmitted by the arc-shaped rod 411 and transmit the force to the rod body. The lower hinge joint is fixed on the arc-shaped guide rail 412 and serves as the other end fulcrum for the telescopic movement of the rod body. The inside of the rod body is filled with a sealed gas-liquid cavity, which provides controllable resistance through telescopic friction and pressure changes.

[0030] When the expansion resistance exceeds the set value (e.g., the expansion plate gets stuck on a hard object and cannot continue to expand): The piston rod 405 continues to extend, but the expansion plate can no longer rotate. The thrust of the connecting rod 409 on the movable sleeve 410 increases, driving the arc rod 411 to move. The arc rod 411 pushes the sliding block 413 to slide along the arc guide rail 412. The damping telescopic rod 414 is compressed / stretched, converting excess hydraulic energy into damping heat energy for absorption. The hydraulic system pressure no longer rises suddenly, protecting the pipeline and seals. After the resistance is eliminated, the damping telescopic rod 414 returns to its original position. The arc-shaped slide and linkage mechanism efficiently convert linear hydraulic motion into rotary opening motion, while the overload buffer mechanism absorbs impact energy and protects the hydraulic system in case of jamming.

[0031] Example 3 In the specific implementation process, refer to Figure 4 as well as Figure 8As shown, the hydraulic supply assembly 3 includes a hydraulic pump 301, a tank 302 for storing hydraulic oil, and two opposing delivery pipes 303. The hydraulic pump 301 is fixedly installed on one side of the handheld part 1, and the tank 302 is fixedly installed inside the handheld part 1 and connected to the hydraulic pump 301. One end of each of the two delivery pipes 303 is connected to the inner cavity of the tank 302, and the other end of each delivery pipe 303 extends to the outside of the handheld part 1. The other end of each delivery pipe 303 is threadedly connected to two connecting pipes 304. The two connecting pipes 304 are respectively connected to the inner cavities of the first liquid storage tank 406 and the third liquid storage tank 418 or to the inner cavity of the second liquid storage tank 502. Valves are provided on the surface of each of the two delivery pipes 303.

[0032] When the hydraulic pump 301 stops supplying oil and the valve is closed, the piston rod 405 stops moving, the connecting rod 409 is locked in the current position of the arc-shaped slide groove 407, and the expansion plates 402 and 403 cannot rotate in opposite directions, maintaining the current opening. The expansion state can be maintained without continuous pressure supply, achieving self-locking. The self-locking characteristic allows the expansion state to be maintained after pressure is released, reducing the operator's burden of continuous pressing.

[0033] Example 4 In the specific implementation process, refer to Figure 7 as well as Figure 8 As shown, the self-locking buffer type multi-condition fire-fighting hydraulic cutting, spreading and demolition integrated mechanical device also includes a top-breaking head 5, which is connected to a quick-release connector 2; The top-breaking head 5 includes a second cover 501, a second liquid storage tank 502, a second piston rod 503, and a hammer head 504. The second liquid storage tank 502 is fixedly installed inside the second cover 501. The inner cavity of the second liquid storage tank 502 is connected to the output end of the hydraulic supply component 3. One end of the second piston rod 503 is slidably connected to the inner side of the second liquid storage tank 502, and the other end of the second piston rod is fixedly connected to one end of the hammer head 504.

[0034] Since breaking through the top requires impact force rather than rotational force, the connecting rod and slide conversion mechanism are eliminated, resulting in a simpler structure and faster response. The piston rod 503 drives the hammer 504 to make a direct linear impact.

[0035] It should be noted that the connection between liquid storage tank 1 406 and piston rod 1 405, the connection between liquid storage tank 2 502 and piston rod 2 503, and the connection between liquid storage tank 3 418 and piston rod 3 417 are all sealed.

[0036] The working principle provided by this invention is as follows: When using the device, the operator takes out the device, holds the handle, inserts the shearing and spreading head into the quick-release connector 2, opens the valve corresponding to the liquid storage tank 406, the piston rod 405 extends to open the spreading plate and inserts it into the gap to be supported (such as the gap of a car door, the gap of a building, etc.), closes the valve, the piston rod 405 stops, the spreading plate is self-locked and held, the valve corresponding to the liquid storage tank 418 is opened, the piston rod 417 extends to close the shearing plate, shearing the car door hinge or building materials, etc. When encountering a hard object and getting stuck, the overload buffer mechanism intervenes, and the damping telescopic rod 414 absorbs the impact; When changing the breaking mode, the operator presses the movable button 207 on the side of the hollow plate 202. The inner side of the movable button 207 drives the top column 205 to retract into the hollow plate 202. The top column 205 pushes the end of the movable block 204 out of the hollow plate 202. The operator pulls out the working head axially. The movable block 204 retracts into the hollow plate 201 under the action of the spring 203, and the lock is released. The reverse operation can be used to fix it and change to a different mode.

[0037] The hydraulic and control systems involved in this invention are all existing technologies and will not be described in detail here.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-locking, buffer-type, multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device, characterized in that, include: Handheld part (1); Quick-release connector (2), one end of which is connected to the cutting and expanding head assembly (4), and the other end of which is connected to the hydraulic drive assembly; A hydraulic supply assembly (3) is mounted on the handheld part (1) and drives the shearing and expanding head assembly (4) to open and close. A cutting and expanding head assembly (4) is connected to the quick-release connector (2). The cutting and expanding head assembly (4) includes a cover (401), a cutting mechanism, a first expanding plate (402), a second expanding plate (403), a connecting column (404), two opposing piston rods (405), and a liquid storage tank (406). The cover (401) is connected to one end of the quick-release connector (2). The connecting column (404) is located outside the cover (401). The first expanding plate (402) and the second expanding plate (403) are rotatably mounted on the surface of the connecting column (404), and the first expanding plate (402) and the second expanding plate (403) are arranged opposite to each other. The top of each of the components is provided with an arc-shaped sliding groove (407). The liquid storage tank (406) is fixedly installed inside the cover (401). The inner cavity of the liquid storage tank (406) is connected to the output end of the hydraulic supply component (3). One end of the two piston rods (405) is slidably connected to the inner side of the liquid storage tank (406), and the other end of the two piston rods (405) passes through the expansion plate (402) and the expansion plate (403) respectively. The inner side of one end of the two piston rods (405) is provided with a connecting groove (408) for the expansion plate (402) and the expansion plate (403) to move. A connecting rod (409) is vertically fixed in each of the two connecting grooves (408). The two connecting rods (409) pass through the two arc-shaped sliding grooves (407) respectively. The arc-shaped slide groove (407) is also provided with an overload buffer mechanism, one end of which is rotatably connected to the connecting rod (409).

2. The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device according to claim 1, characterized in that, The quick-release connector (2) includes two hollow plates (201) and two hollow plates (202). The two hollow plates (201) are fixedly connected to one side of the cover (401). The inner cavity of each of the two hollow plates (201) is provided with a spring (203). The other end of each of the two springs (203) is fixedly connected with a movable locking block (204). One end of each of the two movable locking blocks (204) passes through the two hollow plates (201) and extends outwards. The two hollow plates (202) are fixedly connected to the two sides of the handheld part (1). The inner cavity of the two hollow plates (202) is provided with an elastic telescopic head. One end of the two elastic telescopic heads extends out of the outer side of the two hollow plates (202), and the other end of the two elastic telescopic heads is provided with a top post (205). One end of the two top posts (205) abuts against the ends of the two movable blocks (204).

3. The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device according to claim 1, characterized in that, It also includes a top-breaking head (5), which is connected to the quick-release connector (2); The top-breaking head (5) includes a second cover (501), a second liquid storage tank (502), a second piston rod (503), and a hammer (504). The second liquid storage tank (502) is fixedly installed inside the second cover (501). The inner cavity of the second liquid storage tank (502) is connected to the output end of the hydraulic supply component (3). One end of the second piston rod (503) is slidably connected to the inner side of the second liquid storage tank (502), and the other end of the second piston rod is fixedly connected to one end of the hammer (504).

4. The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device according to claim 1, characterized in that, The overload buffer mechanism includes a movable sleeve (410), an arc rod (411), an arc guide rail (412), a sliding block (413), and a damping telescopic rod (414). The movable sleeve (410) is rotatably connected to the connecting column (404). The surface of the movable sleeve (410) is fixedly connected to one end of the arc rod (411). The arc guide rail (412) is fixedly installed in the arc groove (407). The sliding block (413) is slidably installed in the arc guide rail (412), and one side of the sliding block (413) is fixedly connected to one end of the arc rod (411). The two ends of the damping telescopic rod (414) are rotatably connected to the sliding block (413) and the inner side of the arc guide rail (412), respectively.

5. The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device according to claim 1, characterized in that, The shearing mechanism includes a shearing plate one (415), a shearing plate two (416), two opposing piston rods three (417), and a liquid storage tank three (418). The shearing plate one (415) and the shearing plate two (416) are rotatably mounted on the surface of the connecting column (404), and the shearing plate one (415) and the shearing plate two (416) are staggered vertically. The top of the shearing plate one (415) and the shearing plate two (416) are both provided with arc-shaped sliding grooves two (419). The liquid storage tank three (418) is fixedly installed inside the cover one (401), and the inner cavity of the liquid storage tank three (418) is... Connected to the output end of the hydraulic supply assembly (3), one end of the two piston rods (417) is slidably connected to the inside of the liquid storage tank (418), and the other end of the two piston rods (417) passes through the shear plate (415) and the shear plate (416) respectively. The inner side of one end of the two piston rods (417) is provided with a movable groove (420) for the shear plate (415) and the shear plate (416) to move. A connecting rod (421) is vertically fixed in each of the two movable grooves (420), and the two connecting rods (421) pass through the two arc-shaped sliding grooves (419) respectively.

6. The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device according to claim 2, characterized in that, The surface of the movable card block (204) slides in cooperation with the spline of the side wall of hollow plate one (201) and hollow plate two (202).

7. The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device according to claim 3 or 5, characterized in that, The hydraulic supply assembly (3) includes a hydraulic pump (301), a tank (302) for storing hydraulic oil, and two opposing delivery pipes (303). The hydraulic pump (301) is fixedly installed on one side of the handheld part (1), and the tank (302) is fixedly installed inside the handheld part (1). The tank (302) is connected to the hydraulic pump (301). One end of each of the two delivery pipes (303) is connected to the inner cavity of the tank (302). The other end of each of the two delivery pipes (303) extends to the outside of the handheld part (1). The other end of each of the two delivery pipes (303) is threadedly connected to two connecting pipes (304). The two connecting pipes (304) are connected to the inner cavities of the first liquid storage tank (406) and the third liquid storage tank (418) or to the inner cavity of the second liquid storage tank (502). Valves are provided on the surface of each of the two delivery pipes (303).

8. The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device according to claim 4, characterized in that, The curvatures of the arc-shaped rod (411), the arc-shaped guide rail (412), and the arc-shaped slide (407) are the same.

9. The self-locking buffered multi-condition fire-fighting hydraulic cutting, spreading, and demolition integrated mechanical device according to claim 4, characterized in that, The elastic telescopic head includes a second spring (206) and a movable button (207). The movable button (207) is slidably installed on one side of the hollow plate (202), and the inner side of the movable button (207) is fixedly connected to one end of the top column (205). The two ends of the second spring (206) are fixedly connected to the inner side of the hollow plate (202) and the inner side of the movable button (207), respectively.

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